Wifi Connection drops

Hello,

I am looking for direction here. I have had issues at my apartment with internet dropping suddenly and at random. I have had the modem replaced 3 times now. Everyone says my connection is good and I get no explanation or even a bit of interest in helping outside of restart modem, replace modem. My connection is FINE, when it isn't dropping. I have to work from home, and this is unacceptable.  I need to be escalated to a tier 2 because there is obviously something not right. All my neighbors have Xfinity as well and are complaining of the same issue. My question is how in the world do I get to a tier 2? This is such a terrible structure for a Wi-Fi company.